22947081 has 8 divisors (see below), whose sum is σ = 30621120. Its totient is φ = 15285552.

The previous prime is 22947019. The next prime is 22947083. The reversal of 22947081 is 18074922.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22947081 - 2¹⁰ = 22946057 is a prime.

It is a super-2 number, since 2×22947081² = 1053137052841122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22947083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2716 + ... + 7298.

It is an arithmetic number, because the mean of its divisors is an integer number (3827640).

Almost surely, 2^22947081 is an apocalyptic number.

It is an amenable number.

22947081 is a deficient number, since it is larger than the sum of its proper divisors (7674039).

22947081 is a wasteful number, since it uses less digits than its factorization.

22947081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6255.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 22947081 is about 4790.3111589958. The cubic root of 22947081 is about 284.1684223836.

The spelling of 22947081 in words is "twenty-two million, nine hundred forty-seven thousand, eighty-one".